Asserts that the routing of the given path was handled correctly
and that the parsed options (given in the expected_options hash)
match path. Basically, it asserts that Rails recognizes the route given by
expected_options.

Pass a hash in the second argument (path) to specify the request
method. This is useful for routes requiring a specific HTTP method. The
hash should contain a :path with the incoming request path and a :method
containing the required HTTP verb.

# assert that POSTing to /items will call the create action on ItemsControllerassert_recognizes({controller:'items',action:'create'},{path:'items',method::post})

You can also pass in extras with a hash containing URL parameters
that would normally be in the query string. This can be used to assert that
values in the query string string will end up in the params hash correctly.
To test query strings you must use the extras argument, appending the query
string on the path directly will not work. For example:

# assert that a path of '/items/list/1?view=print' returns the correct optionsassert_recognizes({controller:'items',action:'list',id:'1',view:'print'},'items/list/1',{view:"print"})

The message parameter allows you to pass in an error message that
is displayed upon failure.

# Check the default route (i.e., the index action)assert_recognizes({controller:'items',action:'index'},'items')# Test a specific actionassert_recognizes({controller:'items',action:'list'},'items/list')# Test an action with a parameterassert_recognizes({controller:'items',action:'destroy',id:'1'},'items/destroy/1')# Test a custom routeassert_recognizes({controller:'items',action:'show',id:'1'},'view/item1')